﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Demo
{
    class Round
    {
        public int R { get; set; }
        public int A { get; set; }
        public int B { get; set; }

        public double Size(int R) 
        {
            double size = 3.14 * R * R;

            return size;
        }

        public double Size(int A , int B) 
        {
            double size = A * B;

            return size;
        }

        public Round() 
        {
            
        }

    }
}
